212-81 Exam Dumps | Cryptographic hashes are often used for message integrity and password storage. It is important to understand

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EC-COUNCIL.212-81.v2022-10-26.q74
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Question 65/74

Cryptographic hashes are often used for message integrity and password storage. It is important to understand the common properties of all cryptographic hashes. What is not true about a hash?

A. Few collisions

B. Reversible

C. Variable length input

D. Fixed length output

Correct Answer: B

Reversible
https://en.wikipedia.org/wiki/Hash_function
Hash functions are not reversible.
Incorrect answers:
Fixed length output and Variable length input. Hash function receive variable length input and produce fixed length output Few collisions. Every hash function with more inputs than outputs will necessarily have collisions

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